I started my period on 4/17/15 and ended on 4/23/15.. later that night I had sex. Ever since then I've been cramping like I would right before my period starts. Which I obviously JUST had. What could these cramps mean? I'm not sure if pregnancy is even a possibility bc he never even ejaculated. But then again, I hear all these stories about pre-cum pregnancies. So idek. Help!?